topic Raster Calculator Expression in C# in ArcObjects SDK Questions

Raster Calculator Expression in C#

LynneBridgford — Mon, 29 Jul 2013 18:47:39 GMT

I'm trying to use the RasterCalculator in C# (I'm not using python)

            string slopeRadiansRasterFilePath = Path.Combine(_options.OutputTmpWorkspaceName, "SlopeRadians");
            string formula = ('C:\Workspace\ForestGrids\R03\0310_SantaFe_smallTest\test\NnDemRasters.gdb\Elev' * 1.570796) / 90;

            RasterCalculator rasterCalc = new RasterCalculator();
            rasterCalc.expression = formula;
            rasterCalc.output_raster = slopeRadiansRasterFilePath;

Every time I run it I get a HRESULT error.

I can use the GP tool menu interface with the same raster and formula and it works fine. Any ideas on what the format of the expression should be? I've tried several different variations with single quotes, double quotes, square brackets, etc.

Re: Raster Calculator Expression in C#

sameerpuppal — Fri, 20 Sep 2013 07:25:44 GMT

I'm trying to use the RasterCalculator in C# (I'm not using python)

            string slopeRadiansRasterFilePath = Path.Combine(_options.OutputTmpWorkspaceName, "SlopeRadians");
            string formula = ('C:\Workspace\ForestGrids\R03\0310_SantaFe_smallTest\test\NnDemRasters.gdb\Elev' * 1.570796) / 90;

            RasterCalculator rasterCalc = new RasterCalculator();
            rasterCalc.expression = formula;
            rasterCalc.output_raster = slopeRadiansRasterFilePath;

Every time I run it I get a HRESULT error.

I can use the GP tool menu interface with the same raster and formula and it works fine. Any ideas on what the format of the expression should be? I've tried several different variations with single quotes, double quotes, square brackets, etc.

did you get any solution to this?

Re: Raster Calculator Expression in C#

LynneBridgford — Fri, 27 Sep 2013 14:43:21 GMT

I have not found a solution yet but I'm still looking.